https://www.liftingsafety.co.uk/lifting-equipment-shop/rigging-equipment/crosby-lifting-and-rigging/western-and-marine-blocks/5-steel-blocks-2543
Crosby HW261 & HW262 Steel 5 Sheave Pulley Blocks with Hook, WLL option of 540kg or 820kg -...
Crosby HW-261, HW 262 5" Steel Blocks - 540kg or 820kg - Western 5" Steel Blocks for Wire Cable.